Delta-sigma modulation
Delta-sigma modulation is a type of digital signal processing where an analog signal, like sound or voltage, is turned into digital data. This data is made up of a series of 1s and 0s, also known as "bits".
To start, the analog signal is measured and each measurement is converted into a binary number, which is a number made up of only 1s and 0s. For example, a moving voltage might be measured at 2 volts. In binary, this would be represented as 10. When the next measurement is taken, it could be 3 volts, which would be represented as 11 in binary.
The binary numbers are then put into something called a "delta-sigma modulator". This modulator takes the binary numbers and changes them into a series of pulses of 1s and 0s that can be used to create a digital representation of the original analog signal. Each measurement made of the analog signal results in a new set of pulses.
Now that the analog signal is represented in a digital form, it can be used in digital audio and video devices. This way a sound or a movie can be stored and played back as digital information.
To start, the analog signal is measured and each measurement is converted into a binary number, which is a number made up of only 1s and 0s. For example, a moving voltage might be measured at 2 volts. In binary, this would be represented as 10. When the next measurement is taken, it could be 3 volts, which would be represented as 11 in binary.
The binary numbers are then put into something called a "delta-sigma modulator". This modulator takes the binary numbers and changes them into a series of pulses of 1s and 0s that can be used to create a digital representation of the original analog signal. Each measurement made of the analog signal results in a new set of pulses.
Now that the analog signal is represented in a digital form, it can be used in digital audio and video devices. This way a sound or a movie can be stored and played back as digital information.
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